Mr. F. Walker's Descriptions of Aphides. 23 



more than half its length ; the seventh is longer than the fifth : 

 the mouth is dark green ; its tip, the eyes and the nectaries are 

 black, and the latter are nearly one-fifth of the length of the 

 body : the legs are black ; the shanks except their tips, and some- 

 times the thighs of the fore-legs are dull yellow ; in the four 

 hinder legs, the shanks except their tips, and sometimes the 

 thighs from the middle to the base are pale yellow: the 

 wings are colourless, and much longer than the body; the 

 wing-ribs are pale yellow ; the wing-brands are dull yellow or 

 brown, and the veins are of the latter colour. It often frequents 

 the mulberry in the autumn, and brings forth its young ones 

 thereon. 



2nd var. The body is black : the abdomen is very dark green : 

 the feelers are black, and nearly as long as the body : the mouth 

 is also very dark green with a black tip : the nectaries and the 

 tube at the tip of the abdomen are black, and the former are as 

 long as one-sixth of the body : the legs are black ; the base of the 

 fore-thighs and the shanks except their tips are dark yellow : the 

 wing-ribs are pale yellow ; the brands are pale brown ; the veins 

 are brown. 



3rd var. The body is black : the abdomen is dark green : the 

 feelers are a little shorter than the body : the mouth is dull yel- 

 low with a black tip : the nectaries are black, and as long as one- 

 sixth of the body : the legs are black ; the base of the fore-thighs 

 and the shanks except their tips are dark yellow : the wing-ribs 

 and the rib- veins are pale yellow ; the brands are pale brown ; 

 the other veins are darker. 



4th var. The body is black and very small : the feelers are a 

 little shorter than the body : the nectaries are as long as one- 

 eighth of the body : the wing-ribs and the rib-veins are yellow ; 

 the brands are brown : the other characters like those of the 

 preceding variety. 



5th var. While a pupa it resembles in colour the 11th variety 

 of the wingless Aphis, but the white parts are more dull : there 

 is a row of white powder spots on each side of the body : the 

 rudimentary wings are pale green. 



6th var. The body is black and somewhat shining : the feelers 

 are rather more than half the length of the body : the mouth 

 does not reach the middle hips : the nectaries are about one- 

 twelfth of the length of the body : the wings are longer than the 

 body ; the wing-ribs are dull green ; the brands and the veins are 

 brown. 



7th var. While a pupa it is pale dull olive-green, covered with 

 a white bloom, and its limbs agree in colour with those of the 

 wingless female on the broom. When winged it is small, black, 

 and shining: the abdomen is very dark green, or black, with a slight 



